Bangladesh all-rounder Shakib Al Hasan has been banned for six months for what was described as a “severe attitude problem”.

Shakib, Bangladesh’s most prominent cricketer, will also not be allowed to play in overseas competitions until the end of 2015, Bangladesh Cricket Board president Nazmul Hassan said.

“He has a severe attitude problem, unprecedented in the history of Bangladesh cricket. That is affecting the team,” Hassan said.

Shakib was accused of travelling to play in the Caribbean Premier League Twenty20 tournament without clearance. The 27-year-old, who has played 34 tests and 136 one-day-internationals, had reportedly threatened to quit playing for his country and had a bust-up with coach Chandika Hathurusinghe, an allegation he denies.